fs tree invalid on APFS

hello,

while doing a first-aid check on my macOS APFS volume, I get the following message in the details as it scans the volume. it is

Checking the fsroot tree.

error: drec_val object (oid 0x51b169): invalid type (0)

fsroot tree is invalid.

The volume /dev/rdisk1s1 could not be verified completely.

can anyone who's knowledgeable with this type of error provide some info about what this error is, whether it's a concern or not ?

MacBook Pro (Retina, 15-inch, Late 2013), macOS Sierra (10.12.4), 2.0 GHz/16GB/256GB

Posted on Oct 1, 2017 3:41 PM

32 replies

Jan 26, 2018 1:58 AM in response to Gaffable

Glad to hear it worked.

Bartdeus

Level 1

4 points

Dec 14, 2017 5:34 AM in response to zero7404

It's seems that the upgrade from the previous FS to APFS via high sierra upgrade cause the problem on non-apple disk (SSD only ??).

I've try something that have might work:

- make a bootable backup of disk with Copy Carbon (that take only the good files, so the good file size)

- boot on backup

- format completely my SSD and make a new APFS partition

- restore backup on it

- boot normaly on SSD

and now every things seems ok. No more space taken by the system so long (1 week).

Remember that your are responsible of your data by doing this, take good care to make more than one backup of your files

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fs tree invalid on APFS